ZVIZDIC,
You make me smile. After researching this subject for a couple hours, I was thinking the same thing. This subject somes up at least once a week on the forum.
Sometimes there will be harsh responses about how this is a bad idea. It's just because we see it so often.
Here is my theory. I belive that it takes a special kind of person to even visit this forum. Obviously you have some kind of interest in this subject. Good for you. I think it is in our nature to try to improve on existing designs. I think Dan says it best about the resources required to build a double stator machine. So, after researching for a long time and buying the Windpower book sold on this site, I have built a 10 foot machine which is a proven design. I am still struggling to control this thing. My suggestion if you are considering a project like this is to read as much as you can in the archives of this site, buy the book and ask questions.
Cheers,
Pat